He added that although Israel had allowed some aid supplies into the Gaza Strip through the Kerm Abu Salem crossing point, it was not enough due to the situation in the densely-populated area.

According to the UN official, the Kerm Abu Salem crossing point cannot itself guarantee the flow of food and medical supplies into Gaza.

Abu Hasna said that unless Israel opens all border crossings within days nobody will be able to rebuild Gaza. He added the opening of the border crossings is required to allow materials and equipment into the tiny coastal sliver for shelters to be built for those Gazans who lost their homes during the 23-day Israeli aggression.